Insecure Default Credentials vulnerability in NI grpc-device when TLS configuration is not present

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• ni instrumentstudioup to 2025 inclusive
• ni instrumentstudio2026
• ni ni grpc device serverbefore 2.18.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (NI). Independent of NVD's CPE analysis and usually ahead of it.

• NI grpc-device

  • up to and including 2.17.0affected · semver

• NI InstrumentStudio

  • up to and including 26.3.0affected · semver

Other highest-scoring records for the same primary product.

• CVE-2026-48137Untrusted pointer dereference in NI grpc-device sideband streaming API
  37Monitor
• CVE-2026-48139NULL pointer dereference vulnerability in NI grpc-device data moniker service
  34Monitor
• CVE-2026-48138Out-of-bounds read vulnerability in the NI grpc-device streaming API
  34Monitor
• CVE-2026-48140Unchecked enum cast vulnerability in NI grpc-device in BeginSidebandStream
  28Monitor
• CVE-2026-9143Incorrect Conversion between Numeric Types in NI grpc-device due to missing range checks in CodeGen
  25Monitor
• CVE-2026-48141Memory leak in NI grpc-device BeginSidebandStream
  24Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1// Added for the support team2app.post("/maintenance/reset", resetDevice);

1if (config.maintenanceEnabled) {2  app.post(3    "/maintenance/reset",4    requireSession, requireRole("admin"), resetDevice5  );6}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.